Yiel line theory for point loads
Yiel line theory for point loads
(OP)
Hi, I would like to know how to define a reasonable yield line for a rectangular slab. Two perpendicular sides of the slab are fixed and the other two are free. The only applied load is a force acting on the center of the plate. Thank you!!!






RE: Yiel line theory for point loads
If the weight of slab is considered in addition to the concentrated load, the direction of the positive yield line would be different than the case for the point load by itself.
BA
RE: Yiel line theory for point loads
RE: Yiel line theory for point loads
I first learned about Yield Line Theory from "Reinforced Concrete Fundamentals" by Phil M. Ferguson. It is mentioned in Chapter 10 "Yield Line Theory for Slabs" but is a relatively small portion of his book.
BA
RE: Yiel line theory for point loads
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Yiel line theory for point loads
BA
RE: Yiel line theory for point loads
RE: Yiel line theory for point loads
1) Yield lines along both walls and;
2) A yield line from the bottom left running diagonally up through the central point load.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Yiel line theory for point loads
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Yiel line theory for point loads
BA
RE: Yiel line theory for point loads
RE: Yiel line theory for point loads
It should be recognized that to design the slab, there are two critical yield line patterns for the 3P version. On one diagonal, there is a critical negative moment; on the other there is a critical positive moment. Reinforcing the slab for only one is not sufficient; to prevent collapse, they must both be reinforced.
BA